초록 ▼

A roller bearing for a linear motion includes a bearing body having its opposing side surfaces respectively formed with a loaded roller rolling passage and a non-loaded roller rolling passage which extend in the longitudinal direction of the bearing body. A pair of end caps are respectively secured

A roller bearing for a linear motion includes a bearing body having its opposing side surfaces respectively formed with a loaded roller rolling passage and a non-loaded roller rolling passage which extend in the longitudinal direction of the bearing body. A pair of end caps are respectively secured to both longitudinal ends of the bearing body. Each of the end caps has a roller-turning passage which connects the loaded and non-loaded roller rolling passages. The roller bearing further includes a multiplicity of rollers disposed within the loaded and non-loaded roller rolling passages. The loaded roller rolling passage is constituted by two or more parallel loaded roller rolling grooves each having a depth smaller than the diameter of the rollers. The non-loaded roller rolling passage is constituted by two or more parallel non-loaded roller rolling grooves each having a depth larger than the diameter of the rollers. Further, a load bearing portion is formed on the bearing body between the adjacent non-loaded roller rolling grooves. The load bearing portion has its surface made substantially flush with the surface of the bearing body at the side at which the non-loaded roller rolling grooves are formed.

대표청구항 ▼

A linear roller bearing comprising: a bearing body provided with a first surface and a second surface disposed in parallel relation with each other, said first surface being formed with a plurality of loaded roller grooves for receiving rollers each having a depth less than the diameter of each of t

A linear roller bearing comprising: a bearing body provided with a first surface and a second surface disposed in parallel relation with each other, said first surface being formed with a plurality of loaded roller grooves for receiving rollers each having a depth less than the diameter of each of the rollers received therein, said second surface being formed with a plurality of non-loaded roller grooves corresponding in number to said loaded roller grooves, each of said non-loaded roller grooves having a depth greater than the diameter of each of the rollers received therein, said second surface having at least three load-bearing land portions disposed on the opposite sides of each of said non-loaded roller grooves, the surfaces of all of said load-bearing land portions being flush with each other whereby they can be placed in abutting engagement with the mounting surface of a structural member when said bearing body is fixedly mounted at its second surface on said structural member; and a pair of end caps respectively secured to the opposite ends of said bearing body and each having a plurality of roller-turning passages interconnecting said loaded roller grooves and said non-loaded roller grooves.